Consul vulnerable to a denial of service in the native RPC listener
Consul and Consul Enterprise are vulnerable to a denial of service in the native RPC listener that may allow an authenticated client to exhaust server memory before ACL authorization is evaluated. A client that can complete the internal RPC mTLS handshake may exploit this issue without holding a valid ACL token. This vulnerability (CVE-2026-87106) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.
BIT-consul-2026-87106
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-consul-2026-87106
consul
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.0.4
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "1.21.0"
},
{
"fixed": "2.0.4"
}
]
}
],
"package": {
"name": "consul",
"purl": "pkg:bitnami/consul",
"ecosystem": "Bitnami"
},
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/consul/BIT-consul-2026-87106.json"
}
}
]- Related CVEs
- CVE-2026-87106
Source reference:
/aliases
Publisher severity
medium
Source reference: /database_specific/severity
- Event
- #15209 · Revision 1
- Added to Heist Feed
- Publisher date